Motion | Forces | Work and Energy | Electricity | Waves |
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What is the standard (SI) unit for speed and acceleration?
meter per second , meter per second squared
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What is inertia and how is it related to a passenger on a roller coaster?
Roller coasters use gravity and inertia. Inertia and the gravittt will give the force of acceleration making the coaster go up, down, and around the track
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what is work ?
applying a force over a distance
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What is the difference between and opens and closed circuit?
a open circuit has breaks in the wires and a closed is a full circuit with no breaks
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What is needed for all waves to continue moving
energy
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What is the difference between distance and displacement ?
Displacement is how far an object moves from its original posistion and distance is how far the object is
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What is the difference between weight and mass?
weight is the object due to gravity and mass is the resistance to acceleration when force is applied
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what are the units of energy
joules
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How do opposite and like charges react to each other?
like charges repel and opposite charges attract
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What is the relationship between the frequency and wavelength of a wave?
the relationship is that both frequency goes up and wavelength goes up
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What does the slope of a position vs. time graph tell us? and What does the slope of a velocity vs. time graph tell us?
speed and acceleration
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What is net force ?
the sum of all forces of an object
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What is the law of conservation of energy?
energy cannot be created nor destroyed
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What is the difference between a direct current (DC) and a alternating current (AC) ?
direct currents lets the electric charge only flow in one direction, and a alternating current let’s the electric flow in many directions
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What is the difference between ultrasonic and infrasonic ?
ultrasonic is above what we are able to hear and infrasonic is below what we are able to hear
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What is the difference between speed and velocity?
speed is how fast something is moving and velocity is the speed of something in a given direction.
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What is the law of universal gravitation ?
an object that has a force directly proportional to the product of their masses and inversely proportional to the other object
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What is energy
ability to do work that can cause a change in movement
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What are the three primary colors of light?
red green and blue
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What is meant by positive, negative, and 0 acceleration
positive means the acceleration is speeding up (increasing) , negative means the acceleration is slowing down (decreasing), and 0 acceleration means it’s at a stop
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What two factors in the universal law of gravitation are most important in determining the force of gravity between two objects ?
mass and distance
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What is potential & kinetic energy?
potential energy is an object that can store energy as the result of its posistion & kinetic energy is energy of motion
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What are the three primary colors of pigments
Yellow , Cyan, and Magenta
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